Rule 22 - Visibility of Lights

Overview

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Rule 22 - Visibility of Lights

The lights prescribed in these Rules shall have an intensity as specified in Section 8 of Annex I to these Regulations so as to be visible at the following minimum ranges:

1. In vessels of 50 metres or more in length:

   1. a masthead light, 6 miles;
   2. a sidelight, 3 miles;
   3. a stern light, 3 miles;
   4. a towing light, 3 miles;
   5. a white, red, green or yellow all-round light, 3 miles.

2. In vessels of 12 metres or more in length but less than 50 metres in length:

   1. a masthead light, 5 miles; except that where the length of the vessel is less than 20 metres, 3 miles;
   2. a sidelight, 2 miles;
   3. a sternlight, 2 miles;
   4. a towing light, 2 miles;
   5. a white, red, green or yellow all-round light, 2 miles.

3. In vessels of less than 12 metres in length:

   1. a masthead light, 2 miles;
   2. a sidelight, 1 mile;
   3. a sternlight, 2 miles;
   4. a towing light, 2 miles;
   5. a white, red, green or yellow all-round light, 2 miles.

4. In inconspicuous, partly submerged vessels or objects being towed:

   1. a white all-round light, 3 miles.